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Overload Relay Code Selection
Overload Relay Code SelectionStarters Without Overload Relays for Field Assembly of Starters Using Bulletin 592 Overload Relays ª v ª 11
These products are intended for field installation of Bulletin 592 Eutectic, or 592 solid-state overload relays. (Select Bulletin 592 overload relays from Index to Heater Element Selection Tables andIndex to Heater Element Selection Tables….) They ship in a starter carton with provisions for mounting the overload relay (includes a starter mounting plate, screws/bolts and instructions).
Eutectic Alloy Overload Relays — Overload relay codes do not apply. Use Cat. No. as listed in product selection tables. Select heater elements from . Starter Cat. Nos. marked in blue with eutectic alloy overload relays are part of the AB Express Program. Starters with solid-state overload relays are not presently part of the AB Express Program.
ª All Sizes — No overload relay.
v Bulletins 520, 522, and 523 require two overload relays.
ª Bulletins 530, 1282, and 1283 require two overload relays. When selecting the proper solid-state overload relay or heater, divide motor nameplate full load amperes by 2.00. Use this value to select the proper overload relays.
11Bulletins 540, 1242, and 1243 have one overload relay. When selecting the proper solid-state overload relay or heater, divide motor nameplate full load amperes by 1.73. Use this value to select the proper overload relays.
E1 Plus Solid-State Overload Relay
(Selectable Class 10, 20, or 30) (Automatic/Manual Reset)
For use with Bulletins 505, 505V, 506, 507, 509, 512, 512M, 513, 520, 522, 523, 530, 532, 533, 540, 542, 543, 570, 572, 573, 1232X, 1233X, 1242, 1243, 1272, 1273, 1282, and 1283.§ Ø z
| NEMA Size | Full Load Current Adjustment Range (A) | Overload Relay Code |
| Class 10, 15, 20, 30 | ||
| 00 | 0.1…0.5 | A2A |
| 0.2…1.0 | A2C | |
| 1.0…5.0 | A2E | |
| 3.2…16 | A2F | |
| 0, 1 1PW 1YD |
0.2…1.0 | A2C |
| 1.0…5.0 | A2E | |
| 3.2…16 | A2F | |
| 5.4…27 | A2G | |
| 1 | 9…45 | A2J |
| 2 2PW 2YD |
5.4…27 | A2G |
| 9…45 | A2J | |
| 3 3PW 3YD |
9…45 | A2J |
| 18…90 | A2L | |
| 4 4PW 4YD |
30…150 | A2M |
| 5 5PW 5YD |
60…300 | A2N |
| 6 6PW 6YD |
120…600 | A2R |
| 7ª | 256…810 | A2T |
| 8ª | 384…1215 | A2U |
| 9ª | 800…2250 | A2V |
| § Bulletins 520, 522, and 523 require two overload relay codes to complete the Cat. No. The first code will denote the high speed overload relay and the second code will denote the low speed overload relay. | ||
| Ø Bulletins 530, 532, 533, 1282, and 1283 have two overload relays and require two overload relay codes to complete the Cat. No. When selecting the proper SMP overload relay, divide motor nameplate full load amperes by 2.00. Use this value to select the proper overload relay codes. | ||
| z Bulletins 540, 542, 543, 1242, and 1243 have one overload relay. When selecting the proper SMP overload relay, divide motor nameplate full load amperes by 1.73. Use this value to select the proper overload relay code. | ||
| ª These solid-state overload relays have an interposing relay with a 120V AC coil. | ||
E3 Solid-State Overload Relay: 2 Inputs/1 Output
For use with Bulletins 509, 512, 512M, 513, 530, 532, 533, 540, 542, 543, 570, 572, 573, 1232X, 1233X, 1242, 1243, 1272, 1273, 1282, and 1283.
| NEMA Size |
Full Load Current Adjustment Range (A) |
Overload Relay CodeT |
| 00 | 1…5 | EC1A |
| 3…15 | EC1B | |
| 0…2 | 1…5 | EC1A |
| 3…15 | EC1B | |
| 5…25 | EC1C | |
| 9…45 | EC1D | |
| 3 | 9…45 | EC1D |
| 18…90 | EC1E | |
| 4 | 28…140 | EC1F |
| 5 | 60…302 | EC1H |
| 6 | 125…630 | EC1K |
E3 Plus Solid-State Overload Relay: 4 Inputs/2 Outputs, Built-In Ground Fault Sensor, PTC Thermistor Input
For use with Bulletins 505, 505V, 506, 507, 509, 512, 512M, 513, 520, 522, 523, 530, 532, 533, 540, 542, 543, 570, 572, 573, 1232X, 1233X, 1242, 1243, 1272, 1273, 1282, and 1283.¬
| NEMA Size |
Full Load Current Adjustment Range (A) |
Overload Relay CodeT |
| 00 | 1…5 | EC2A |
| 3…15 | EC2B | |
| 0…2 | 1…5 | EC2A |
| 3…15 | EC2B | |
| 5…25 | EC2C | |
| 9…45 | EC2D | |
| 3 | 9…45 | EC2D |
| 18…90 | EC2E | |
| 4 | 28…140 | EC2F |
| 5 | 60…302 | EC2H |
| ¬ Bulletin 520 requires two overload relay codes to complete the cat. no. The first code will denote the high speed overload relay and the second code will denote the low speed overload relay. | ||
| T Rockwell Automation recommends using 120 or 240V AC coils on all NEMA Starters with E3 solid-state overload relays. When using coil voltages other than 120 or 240V AC, consult your local Rockwell Automation distributor. | ||